Baryon pairs production ine⁺e⁻ annihilation at $\sqrt s = 2.4 GeV$

D. Bisello, G. Busetto,A. Castro,M. Nigro,L. Pescara,M. Posocco,P. Sartori,L. Stanco,A. Antonelli,M. E. Biagini,R. Baldini,A. Calcaterra, M. Schioppa,J. E. Augustin,G. Cosme, F. Couchot,F. Fulda,G. Grosdidier,B. Jean-Marie,V. Lepeltier,G. Szklarz

msra（1990）

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摘要

Search for baryon pairs production ine+e− annihilation at $\sqrt s = 2386 MeV$ is reported. The data relate to a luminosity of 161 nb−1 collected by the DM2 experiment at DCI, the Orsay colliding ring. First measurements of directe+e− annihilation into $\Lambda \bar \Lambda$ and ofe+e−→ $p\bar p$ at this energy are presented. First observation of a goode+e−→ $n\bar n$ candidate is reported and upper limits are given fore+e−→ $n\bar n, \Lambda \bar \sum ^0 + c.c.$ and $\Sigma ^0 \bar \Sigma ^0$ .

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Baryon pairs production ine+e− annihilation at

Baryon pairs production ine⁺e⁻ annihilation at $\sqrt s = 2.4 GeV$